222250212 has 36 divisors (see below), whose sum is σ = 563422860. Its totient is φ = 73869312.

The previous prime is 222250153. The next prime is 222250213. The reversal of 222250212 is 212052222.

It can be written as a sum of positive squares in 2 ways, for example, as 27815076 + 194435136 = 5274^2 + 13944^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (222250213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3964 + ... + 21452.

It is an arithmetic number, because the mean of its divisors is an integer number (15650635).

Almost surely, 2^222250212 is an apocalyptic number.

It is an amenable number.

222250212 is an abundant number, since it is smaller than the sum of its proper divisors (341172648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222250212 is a wasteful number, since it uses less digits than its factorization.

222250212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17852 (or 17847 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 222250212 is about 14908.0586261257. The cubic root of 222250212 is about 605.7322936106.

The spelling of 222250212 in words is "two hundred twenty-two million, two hundred fifty thousand, two hundred twelve".